Comment 9 for bug 547066

I have the same problem (nvidia driver reported as activated but not in use). But when I remove all other drivers that I can find from the system (nouveau and nv) and restart, I find that this message is still reported.

However, when I start up nvidia-settings (195.36.24) I also find that some adjustments there work (digital vibrance, x server colour correction) and some don't (x server xvideo settings). This suggests to me that the nvidia driver is in fact in use, perhaps not fully, despite the message from the jockey gui.